If you thought Portal 2‘s Alternate Reality Game was over, you thought wrong. A slideshow on the final day of the Game Developers Conference sputtered one last message, possibly alluding to the viral marketing game’s return.

After accepting a Pioneer Award at the Game Developers Choice Awards in San Francisco on Thursday, Valve’s Gabe Newell launched into a speech about his company’s future with the aid of a slideshow. Of course, just when he was about to divulge some of Valve’s deepest secrets, the program “crashed” with the fatal blue screen of death.

But it wasn’t any blue error screen. When translated from hex, the jumble of letters reveals a brief message from the mischievous A.I. GLaDOS, as discovered by a poster on the Penny Arcade forum. The translation reads:

GLaDOS
A fatal exception (S) has occurred at (U)(S) : (P)(E)(N)(D) in (U)(N )(T)((I)) *
(L)(E)(E)(E). The current application will be terminated.

* Press any key to flood the facility with deadly neurotoxins.
* Press CTRL+ALT+DEL again to reinstate testing. You will lose any
Non-vital personnel and their progress through the current test.

Press any key to continue _

Fans have interpreted “Suspend until EEE” to mean the ARG may be on hiatus until E3, which will run in Los Angeles from June 15 to 17. We’ll just have to see…